[MPS] Add API to query GPU core count #160414
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🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/160414
Note: Links to docs will display an error until the docs builds have been completed. ⏳ No Failures, 15 PendingAs of commit 518bda6 with merge base fc80f68 ( This comment was automatically generated by Dr. CI and updates every 15 minutes. |
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chuanhaozhuge
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Aug 14, 2025
Using good old IOKit to get `gpu-core-count` property from device implementing `AGXAccelerator` service
Expose this one as `torch.backend.mps.get_core_count()` and make it accessible via `MpsInterface` to the inductor
Test Plan: Run `python3 -c "import torch;print(torch.backends.mps.get_name(), torch.backends.mps.get_core_count())"` and compare it to `system_profiler SPDisplaysDataType|head -n10`
```
% python3 -c "import torch;print(torch.backends.mps.get_name(), torch.backends.mps.get_core_count())"
Apple M1 Pro 16
% system_profiler SPDisplaysDataType|head -n10
Graphics/Displays:
Apple M1 Pro:
Chipset Model: Apple M1 Pro
Type: GPU
Bus: Built-In
Total Number of Cores: 16
Vendor: Apple (0x106b)
Metal Support: Metal 3
```
This would significantly improve occupancy for torch.compile generated kernels
Pull Request resolved: #160414
Approved by: https://github.com/dcci
chuanhaozhuge
pushed a commit
that referenced
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Aug 18, 2025
Using good old IOKit to get `gpu-core-count` property from device implementing `AGXAccelerator` service
Expose this one as `torch.backend.mps.get_core_count()` and make it accessible via `MpsInterface` to the inductor
Test Plan: Run `python3 -c "import torch;print(torch.backends.mps.get_name(), torch.backends.mps.get_core_count())"` and compare it to `system_profiler SPDisplaysDataType|head -n10`
```
% python3 -c "import torch;print(torch.backends.mps.get_name(), torch.backends.mps.get_core_count())"
Apple M1 Pro 16
% system_profiler SPDisplaysDataType|head -n10
Graphics/Displays:
Apple M1 Pro:
Chipset Model: Apple M1 Pro
Type: GPU
Bus: Built-In
Total Number of Cores: 16
Vendor: Apple (0x106b)
Metal Support: Metal 3
```
This would significantly improve occupancy for torch.compile generated kernels
Pull Request resolved: #160414
Approved by: https://github.com/dcci
can-gaa-hou
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to can-gaa-hou/pytorch
that referenced
this pull request
Aug 22, 2025
Using good old IOKit to get `gpu-core-count` property from device implementing `AGXAccelerator` service
Expose this one as `torch.backend.mps.get_core_count()` and make it accessible via `MpsInterface` to the inductor
Test Plan: Run `python3 -c "import torch;print(torch.backends.mps.get_name(), torch.backends.mps.get_core_count())"` and compare it to `system_profiler SPDisplaysDataType|head -n10`
```
% python3 -c "import torch;print(torch.backends.mps.get_name(), torch.backends.mps.get_core_count())"
Apple M1 Pro 16
% system_profiler SPDisplaysDataType|head -n10
Graphics/Displays:
Apple M1 Pro:
Chipset Model: Apple M1 Pro
Type: GPU
Bus: Built-In
Total Number of Cores: 16
Vendor: Apple (0x106b)
Metal Support: Metal 3
```
This would significantly improve occupancy for torch.compile generated kernels
Pull Request resolved: pytorch#160414
Approved by: https://github.com/dcci
markc-614
pushed a commit
to markc-614/pytorch
that referenced
this pull request
Sep 17, 2025
Using good old IOKit to get `gpu-core-count` property from device implementing `AGXAccelerator` service
Expose this one as `torch.backend.mps.get_core_count()` and make it accessible via `MpsInterface` to the inductor
Test Plan: Run `python3 -c "import torch;print(torch.backends.mps.get_name(), torch.backends.mps.get_core_count())"` and compare it to `system_profiler SPDisplaysDataType|head -n10`
```
% python3 -c "import torch;print(torch.backends.mps.get_name(), torch.backends.mps.get_core_count())"
Apple M1 Pro 16
% system_profiler SPDisplaysDataType|head -n10
Graphics/Displays:
Apple M1 Pro:
Chipset Model: Apple M1 Pro
Type: GPU
Bus: Built-In
Total Number of Cores: 16
Vendor: Apple (0x106b)
Metal Support: Metal 3
```
This would significantly improve occupancy for torch.compile generated kernels
Pull Request resolved: pytorch#160414
Approved by: https://github.com/dcci
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Stack from ghstack (oldest at bottom):
Using good old IOKit to get
gpu-core-countproperty from device implementingAGXAcceleratorserviceExpose this one as
torch.backend.mps.get_core_count()and make it accessible viaMpsInterfaceto the inductorTest Plan: Run
python3 -c "import torch;print(torch.backends.mps.get_name(), torch.backends.mps.get_core_count())"and compare it tosystem_profiler SPDisplaysDataType|head -n10This would significantly improve occupancy for torch.compile generated kernels
cc @voznesenskym @penguinwu @EikanWang @jgong5 @Guobing-Chen @XiaobingSuper @zhuhaozhe @blzheng @wenzhe-nrv @jiayisunx @ipiszy @chenyang78 @kadeng @muchulee8 @amjames @chauhang @aakhundov @coconutruben @Lucaskabela